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Add sysctlbyname() for MacOS

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Justine Tunney 2024-05-02 23:21:43 -07:00
parent 5c6877b02b
commit 181cd4cbe8
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GPG key ID: BE714B4575D6E328
21 changed files with 193 additions and 35 deletions
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18
libc/log/oncrash_amd64.c
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@ -254,10 +254,28 @@ static relegated void ShowCrashReport(int err, int sig, struct siginfo *si,
kprintf("\n");
}
static inline void SpinLock(atomic_uint *lock) {
int x;
for (;;) {
x = atomic_exchange_explicit(lock, 1, memory_order_acquire);
if (!x)
break;
}
}
static inline void SpinUnlock(atomic_uint *lock) {
atomic_store_explicit(lock, 0, memory_order_release);
}
relegated void __oncrash(int sig, struct siginfo *si, void *arg) {
static atomic_uint lock;
BLOCK_CANCELATION;
SpinLock(&lock);
int err = errno;
__restore_tty();
ShowCrashReport(err, sig, si, arg);
SpinUnlock(&lock);
ALLOW_CANCELATION;
}
#endif /* __x86_64__ */

21
libc/log/oncrash_arm64.c
View file

@ -18,6 +18,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/sections.internal.h"
#include "libc/assert.h"
#include "libc/atomic.h"
#include "libc/calls/blockcancel.internal.h"
#include "libc/calls/calls.h"
#include "libc/calls/struct/aarch64.internal.h"
@ -32,6 +33,7 @@
#include "libc/calls/ucontext.h"
#include "libc/cxxabi.h"
#include "libc/errno.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/describebacktrace.internal.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/intrin/kprintf.h"
@ -377,10 +379,25 @@ static relegated void __oncrash_impl(int sig, struct siginfo *si,
klog(b->p, MIN(b->i, b->n));
}
static inline void SpinLock(atomic_uint *lock) {
int x;
for (;;) {
x = atomic_exchange_explicit(lock, 1, memory_order_acquire);
if (!x)
break;
}
}
static inline void SpinUnlock(atomic_uint *lock) {
atomic_store_explicit(lock, 0, memory_order_release);
}
relegated void __oncrash(int sig, struct siginfo *si, void *arg) {
ucontext_t *ctx = arg;
static atomic_uint lock;
BLOCK_CANCELATION;
__oncrash_impl(sig, si, ctx);
SpinLock(&lock);
__oncrash_impl(sig, si, arg);
SpinUnlock(&lock);
ALLOW_CANCELATION;
}